Can cloud seeding solve the drought in Iran? Iran is experiencing a drought so intense that the country’s president has said the capital city, Tehran, might have to be evacuated. In an attempt to bring rain, aircraft began a cloud-seeding operation on 15 November that is planned to last through the traditional rainy season until May. But experts caution that this technique is challenging and unlikely on its own to make a major dent in the water crisis. Learn more: https://www.newscientist.com/ar